4K NVR No HDD that supports: up to 32 channels H.265/H.264/MJPEG ARB (Automatic Recovery Backup) & Failover (N+1) 8 front Hot swappable SATA HDDs (with a maximum internal storage capacity of 64TB) e-SATA/iSCSI storage RAID-5 WiseStream compression technology dual monitor video out maximum camera resolution of 12MP recording/display and fisheye dewarping on WEB and CMS QR Code